*/
  static String nullToEmpty(@Nullable String string) {
    return (string == null) ? "" : string;
  }

  /**
   * Returns the string if it is not empty, or a null string otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} if it is not empty; {@code null} otherwise
   */
  static @Nullable String emptyToNull(@Nullable String string) {

            public String[] getQueryAdditionalScrollResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalCacheResponseFields(String... fields) {
                return fields;
            }

            @Override
            public String[] getQueryAdditionalHighlightedFields(String... fields) {

    public void setId_Equal(String id) {
        setId_Term(id, null);
    }

    public void setId_Equal(String id, ConditionOptionCall<TermQueryBuilder> opLambda) {
        setId_Term(id, opLambda);
    }

    public void setId_Term(String id) {
        setId_Term(id, null);
    }

    public void setId_Term(String id, ConditionOptionCall<TermQueryBuilder> opLambda) {

 * <li>{@link #addToArrayIndex(String, String, String, Map)}: Adds a map to the array index.</li>
 * <li>{@link #deleteKeyFromArray(String, String, String)}: Deletes all entries associated with the specified key from the array index.</li>
 * <li>{@link #deleteFromArray(String, String, String)}: Deletes a specific entry from the array index based on the ID.</li>

            public void setDateHeader(String name, long date) {
            }

            @Override
            public void addDateHeader(String name, long date) {
            }

            @Override
            public void setHeader(String name, String value) {
            }

            @Override
            public void addHeader(String name, String value) {
            }

            @Override

    public void setId_Equal(String id) {
        setId_Term(id, null);
    }

    public void setId_Equal(String id, ConditionOptionCall<TermQueryBuilder> opLambda) {
        setId_Term(id, opLambda);
    }

    public void setId_Term(String id) {
        setId_Term(id, null);
    }

    public void setId_Term(String id, ConditionOptionCall<TermQueryBuilder> opLambda) {

                final int order) {
            return buildGoUrl(contextPath, docId, queryId, requestedTime, order);
        }

        List<Map<String, Object>> testSearchWithQueryFiltered(final String query, final Map<String, String[]> fields,
                final String[] extraQueries) {

type SHA256Mismatch struct {
	ExpectedSHA256   string
	CalculatedSHA256 string
}

func (e SHA256Mismatch) Error() string {
	return "Bad sha256: Expected " + e.ExpectedSHA256 + " does not match calculated " + e.CalculatedSHA256
}

// BadDigest - Content-MD5 you specified did not match what we received.
type BadDigest struct {
	ExpectedMD5   string
	CalculatedMD5 string
}

func (e BadDigest) Error() string {

        String result = normalizer.normalize("ａｂｃｄｅｆｇｈｉｊｋｌｍｎｏｐｑｒｓｔｕｖｗｘｙｚ", "field");

        assertEquals("abcdefghijklmnopqrstuvwxyz", result);
    }

    @Test
    public void test_uppercaseAlphabet() throws Exception {
        FullWidthToHalfWidthAlphabetNormalizer normalizer = new FullWidthToHalfWidthAlphabetNormalizer();

    }

    @Test
    public void testLoadJsonResourceWithSubstitution() throws IOException {
        Map<String, String> substitutions = new HashMap<>();
        substitutions.put("${test.placeholder}", "replaced_value");

        // Test loading with substitution - using a resource that exists
        String content = SettingsResourceLoader.loadJsonResource("suggest_indices/suggest_settings.json", substitutions);